The United States men’s basketball already has qualified for the quarterfinal round, which begins Wednesday. But the latest “Dream Team” will face its toughest test of these Games so far when it faces Argentina Monday in the final game of the preliminaries. Bet on it at WagerWeb.com.

Back in a July 22 exhibition in Barcelona, Kevin Durant scored 27 points to lead the USA its closest game since they gathered for the Olympics, 86-80 over the Argentines. The Americans were up 19-3 at one point but their lead was down to four with 2:50 left after Spurs and Argentina star Manu Ginobili’s three-point play. Durant and Chris Paul then hit big 3-pointers as the Americans held off their opponents. Kobe Bryant added 18 points and LeBron James had 15 for the U.S.

Ginobili scored 23 points, Carlos Delfino had 15 and Luis Scola 14 for Argentina. That country won the 2004 Olympic gold medal, beating the U.S. in the semifinals. The Americans returned the favor four years later in the same round before recapturing the gold.

Gold will be handed out Monday in the men’s 400 meters and 400-meter hurdles and the U.S. is a top contender in both. In Beijing, Team USA pulled off a medal sweep of the 400 as LaShawn Merritt captured his first Olympic gold in 43.75, with Athens champion Jeremy Wariner second in 44.74 and David Neville this in 44.80. Merritt is the lone veteran returning to the Olympics for the U.S. as he will be joined in London by collegians Tony McQuay and Bryshon Nellum. Another American medal sweep would be extraordinary as the field of competitors is formidable. Heading that group is Grenada’s Kirani James, the 2011 world champion.

In the 400m hurdles, the USA also pulled off a medal sweep in Beijing with Angelo Taylor winning gold, Kerron Clement taking silver and Bershawn “Batman” Jackson earning bronze. Taylor and Jackson finished outside of the medals and Clement was a non-factor at the 2011 World Championships, but Taylor and Clement are back to the Games alongside teammate Michael Tinsley. Great Britain has a gold-medal hopeful in Dai Greene, the 2011 world champion.